A researcher investigates whether classical music is more or less soothing to air-traffic controllers than modern music. She plays a classical selection for another. She gives each person an irritability questionnaire and obtains the following:

Classical: n=6 Xbar = 14.69 s_x² = 8.4

Modern: n=6 Xbar=17.21 s_x²= 11.6

(a.) Subtracting C-M what are null and alternative hypothesis?

(b.) what is t_obt ?

(c.) With Alpha= 0.05, are the results significant?

(d.) Report the results using the correct format

(e.) What should she conclude about the relationship in nature between type of music irritability?

(f.) What other statistics should be computed?